HWA infestations can be most noticeably detected by the small, white, woolly masses that are attached to the underside of the twig, near the base of the needles.
continued — Systemic insecticides may be an option for larger trees. For insecticide guidelines for the state, visit Cornell University’s Crop and Pest Management Guidelines at ipmguidelines.org/ and the DEC recommends consulting a certified pesticide applicator.
Dispersal and movement of HWA occur primarily during the first life stage (“crawler”) as a result of wind and animals that come in contact with the sticky egg sacks and crawlers. Isolated infestations and long-distance movement of HWA most often are instances of people transporting infested nursery stock or other forest products.
Information on HWA can be found at www.nyis.info. For questions or to report possible infestations visit DEC’s website at www.dec.ny.gov/animals/82617.html or call its toll-free Forest Pest Hotline at 1-866-640-0652.
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